[Bulletin 

 Princeton 

 Bird Club 



(Buteo borealis [GmeL] ) has not been known to breed 

 here for some years. 



For the sake of convenience, the birds of the region 

 may be divided into several more or less well-defined 

 classes or groups, arranged according to the seasons in 

 which they may be observed. 



I. 



Permanent Residents. 



This group includes all species which remain 

 throughout the year. It does not follow, however, 

 that all are as abundant at one season as at another, or 

 that the same individuals pass the entire year here, 

 several of the species enumerated below being more or 

 less migratory. This is seen in the case of such birds 

 as the Crows (Corvus americanus [Aud.]), which are 

 more common during the colder months than in summer. 

 It is very probable that the Bluebirds (Sialia sialis 

 \Linn.\) found here in the winter are not the same 

 individuals that nested in this locality in the spring, 

 but are arrivals from the north. The Marsh Hawk 

 (Circus hudsonius \Linn.'Y) and Cedar Waxwing (Ampelis 

 cedrorum [Fz>z7/.]) are more abundant during the 

 migrations, the Red-tailed Hawk (Buteo borealis iGmelJ] ) 

 in winter and the Song Sparrow (Melospiza melodia 

 [Wtlson]) and Bluebird (Sialia sialis [Linn.]) in the 

 warmer months. Such birds as the Ruffed Grouse 

 (Bonasa umbellus [Lmn.] ), Blue Jay (Cyanocitta cris- 

 tata [Lmn.]) and several of the Owls (Strigidas and 

 Bubonidas), however, are Permanent Residents in the 

 strictest sense. 



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